Overview:This 1TB 7200 rpm hard drive (IBM Part# 81Y9806) provides a 3.5-inch form factor option that can be used as a simple-swap SATA drive. The hard drive offerings for the IBM System x family of 3.5-inch SATA hard drives are the highest performing SATA options and provide a wider selection of choices to satisfy a range of applications. These drives are positioned at the top of the IBM SATA hard drive line.